https://i.imgur.com/Ijzt56t.jpg https://i.imgur.com/FR0qla3.jpg https://i.imgur.com/KDvP5Du.jpg
I'll have to dig up some of the 'end of days' photos where it almost breached the wall. You had to buy flood insurance early on... which was pricey, but covered a lot of the supplies. It was several thousand dollars for the 2009 construction.
We had 3 '500 year' floods. 1997, 2009, and 2011. The Red river flows north, which is an oddity. Lots of snow, with folks redirecting water caused some new records. Grand Forks was flooded out in one of those years - Fargo almost fell. By the time the third major flood happened - we were ready.
https://i.imgur.com/jhAIMMn.jpg
We set up a series of hesco bags and filled them directly. Worked great, and they came and picked up the bags to be reused in the Bismark flooding. Sand doubled in price each time... and the city really wanted this property on the cheap... so that last run took hours but cost about 20k. (yikes) After that, the city built a permanent dike that protected the property.
i was expecting to see a raised home on the pic, not a better way to fill sandbags. oh well.
If you look at the aerial view, you can spot the neighbors homes that did not make it and the edge of the city dike now in the back yard. Many houses flooded. Heartbreaking when you saw folks trying to have a fire truck flood their failing dike with clean water rather than have the sewage/etc fill the house.